Amp doesnt power up..
Getting some wierd voltages on the 494
Heres what i get on the 494
Pin 1:0.00
Pin 2:12.20
Pin 3:0.18
Pin 4:0.56
Pin 5:0.28
Pin 6:0.32
Pin 7:0.00
Pin 8:0.26
Pin 9:0.00
Pin 10:0.00
Pin 11:0.27
Pin 12:13.08
Pin 13:12.23
Pin 14:12.23
Pin 15:12.23
Pin 16:0.97
494 defective or did i lose ground?
Getting some wierd voltages on the 494
Heres what i get on the 494
Pin 1:0.00
Pin 2:12.20
Pin 3:0.18
Pin 4:0.56
Pin 5:0.28
Pin 6:0.32
Pin 7:0.00
Pin 8:0.26
Pin 9:0.00
Pin 10:0.00
Pin 11:0.27
Pin 12:13.08
Pin 13:12.23
Pin 14:12.23
Pin 15:12.23
Pin 16:0.97
494 defective or did i lose ground?
Last edited:
Pin 7 is at 0v so unless you lost ground in the middle of the testing, the IC is defective (assuming that nothing is driving 12v back into pins 13, 14 and 15).
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